BETWEEN' THE VISCOSITY OF LIQUIDS AND THEIR CHExMICAL NATURE. G93 
Slope 
0,987. 
Slope -O 34798 . 
f ' ii 
'1 :'i ■ 
f. 
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t". 
n 
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EtLyl alcotol. 
o 
58-5 
606 
0 
- 9-85 
2191 
3-61 
Propyl alcoliol. 
86-5 
560 
25-4 
1976 
3-53 
Butyl alcohol. 
95’6 
575 
35-6 
1980 
3-44 
Isopropyl alcohol .... 
82-9 
490 
31-7 
1673 
3-41 
Isobutyl alcohol .... 
99-6 
525 
46-9 
1747 
3-33 
Inactive amyl alcohol . 
105-2 
574 
49-7 
1865 
3-25 
Active amyl alcohol 
104-7 
555 
53-7 
1745 
3-14 
Trimethyl carhinol .... 
90-9 
461 
49-0 
1495 
3-24 
Dimethyl ethyl carhinol . 
93-9 
490 
49-1 
1500 
3-06 
Allyl alcohol. 
63-1 
610 
4-3 
1946 
3-19 
The value of the ratio instead of being 274, is now considerably greater, 
being on the average 3’33. It is thus evident that the mode in which the magnitude 
of the viscosity coefficients of the alcohols varies with the value of the slope is different 
from that of the whole of the other liquids. It is further indicated that, although the 
value of the ratio is somewhat the same for all the alcohols, yet it depends to some 
extent on their chemical nature, as it is smaller the higher the molecular weight for 
alcohols of like constitution, and, in the case of alcohols of the same molecular weight, 
it is smaller the more branched the atomic chain, or the lower the boiling-point, as is 
seen from the followino’ table :— 
O 
Propyl . 
3-53 
Butyl. 
3-44 Inactive amyl .... 
3’25 
Isopropyl .... 
3-41 . 
Isobutyl. 
3-33 Active amyl. 
3-14 
Trimethyl carhinol . 
3 24 Dimethyl ethyl carhinol . 
3 06 
It is thus apparent that not only are the magnitudes of the viscosity coefficients of 
all the alcohols determined at any one slope, peculiar, but also the manner in which 
the values of the coefficients change with the slope. With such data as are to hand, 
it would.seem that relations between the viscosity coefficients of the other liquids are 
of the same kind, no matter what slope be used. The mode in which the values for 
the alcohols are related to those for the other liquids depends, however, on the slope, 
and, further, the relations between the values for the alcohols themselves seem to 
depend on the value of the slope, and to suffer slight variations which are related to 
their chemical nature. 
There is little doubt that methyl alcohol behaves in the same way as the higher 
alcohols, for the value given by it for the quotient 
